1998 Chevrolet Venture Owner's Manual - Page 216
1998 Chevrolet Venture Manual
Page 216 highlights
Setting the Variance The display will show all the display segments for half a second toacknowledge the change in zone number. Automatic Compass Calibration The compass is self-calibrating which eliminates the need to manually set the compass. When the vehicleis new, the calibration process may not be complete. In these cases the calibration symbol, C, will be displayed where thecompass reading is normally displayed. To calibrate the compass, in an area free from large metal objects, make three 360" turns. The calibration symbol will turn off and the compass reading will be displayed. Manual Compass Calibration If the compass appears erratic andthe calibration symbol does not appear, you must manually put the compass intothe calibration mode. Turn the ignition on and cycle the DIC to the Compass/Temperature mode. Press both the E M and MODE buttons for approximately five seconds. The last entered variance zone number willbe displayed. Press the E M button until the proper variance number, as shown on the map, is showing. Press the MODE button to set the new variance zone and resume normal operation. Turn the ignition on and cycle the DIC to the Compass/Temperature mode. Press both the E M and MODE buttonsfor at least 10 seconds until the calibration symbol appears. Release both buttons and complete three 360" turns in an areafree from large metal objects.The calibration symbol will turn off and thecompass reading will be displayed. 2-99